Bugfix in TopologyComponent-SiSAdapter

src/de/tud/kom/p2psim/impl/topology/DefaultTopologyComponent.java

@@ -147,7 +147,7 @@ public class DefaultTopologyComponent implements TopologyComponent {
 
 				@Override
 				public void eventOccurred(Object content, int type) {
-					if (getTopology().getTopologyView(PhyType.WIFI) != null) {
+					if (getHost().getLinkLayer().hasPhy(PhyType.WIFI)) {
 						new SiSTopologyProvider(sis, SiSTypes.NEIGHBORS_WIFI,
 								DefaultTopologyComponent.this, getTopologyID(
 										NetInterfaceName.WIFI, true),